| 摘要 |
A disclosed polyurethane composition for coating a pipe for water works includes a hardening agent unit and a main material unit. The hardening agent unit includes urethane prepolymers, isocyanate monomers, moisture absorbents, and fillers. The main material unit includes an alcohol mixture containing polyols, moisture absorbents, fillers, pigments, and boron nitride. The molar ratio of the polyol group of the main material unit against the isocyanate group of the hardening agent unit is 1.0 : 1.1 to 1.0 : 1.0. |
